资源描述：
《分布式多芯电缆测试仪研制》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、哈尔滨工业大学工学硕士学位论文AbstractIntricateinternalcablenetworksoflargeequipment,suchasaircraft,ships,etc.arecharacterizedinpointsanddifficultytodisassemble.Usingacommerciallycentralizedcabletestequipmenttodetectthemrequireslongadaptercable,whichisnotonlybulky,heavybutalsowiringtedio
2、usaswellassuchproblemserror-prone,expensiveandeasybeingdamagedduetofrequentdrag,affectingtheaccuracyofthetestresults.Inaddition,theseequipmentsareinconvenienttoutilizeinsomeoccasionssuchasexternalfieldtesting.Inresponsetotheseproblems,thesubjectdevelopedaCANbusbaseddistrib
3、utedmulti-corecabletester.Thetesterachieveacapacityofupto160testpointsina19-inch1Uportablechassis,notonlyforstructuralscan,continuitytesting,insulationtestingrepresentativetestitems,butalsoincreasedthevibrationtestfunctionusedtodetectconnectionreliabilityofcableandconnecto
4、r.Thisequipmentrequiresonlyacommonmeasurementlinesandashortadaptercableleadingtoimprovementoftestefficiencyandaccuracy.Onthehardwarepart,equippedwithDSP2812asthehostCPU,overvoltageprotectioncircuitdesignandinaccordancewithstandarddrawingboardensuringtestersafe,relaymatrixs
5、witchdesignedforfastswitchingtestchannel,thetesterutilizeitseCANmodulesandhigh-speedon-chipA/DmoduletoimplementCANbuscommunicationandsignalacquisition.Onthesoftwarepart,usingself-developed"commandnumber+parameter"formatCAN-buscommunicationprotocolasaguide,thetesterisfirstl
6、ydesignedthetestingprocessandmaster-slaveon-linetestingmechanism,followingbywritingDSPfirmwareinCCS3.3environmenttoachievetester’sCANbuscommunicationfunctionsandtestprocesscontrolfunctionsandthendevelopeddriverinVC.60environment,achievingthemanagementhostaccessandcontrolte
7、ster.Onthestructurepart,controlpanel,relayarraypanelandfunctionindicatorpanelindependentfromeachother,undertheguideofmodularizationthinking.Throughtherationaldesignofcircuitboardstructureandinter-boardconnection,thestructureofthecabletesterstandardizedandminiaturized,porta
8、bilityandmaintainabilitybeinggreatlyimprovedcomparedtosimilarproducts.Unitedebuggingresul
